10 Inventions That Changed the World in Ways We Didn't Expect

In some ways, we've become a spoiled, high-tech civilization that overlooks many of its most remarkable innovations — especially those that were developed more than 30 years ago. So, to remind us just how unappreciative we really are, here are 10 powerful technologies developed last century that are still changing… »10/12/12 1:21pm10/12/12 1:21pm